Seen from space, Earth is a swirl of blue and white. The blue is Earth's oceans, which cover 70 percent of its surface. Yet the ocean is the most unexplored region of our planet. From Shore to Ocean Floor is the story of how humans went from building the first boats to discovering the secrets of the deep. Marvel at incredible scientific discoveries, be dazzled by some of the most exciting new species, and admire the incredible people who took the very first steps below the surface.